Filter for a household aquarium



FIG. 1 is a perspective view of a filter for a household aquariumembodying my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a vertical cross-sectional view thereof, taken along line 8--8of FIG. 4;

FIG. 9 is a vertical cross-sectional view thereof, taken along line 9--9of FIG. 4;

FIG. 10 is a vertical cross-sectional thereof, taken along line 10--10of FIG. 4; and,

FIG. 11 is a reduced perspective view thereof, the broken-line showingof the aquarium tank and attachments being for illustrative purposesonly and forming no part of the claimed design.

The ornamental design for a filter for a household aquarium, as shownand described.